================================================================== BUG: KCSAN: data-race in __mod_timer / __mod_timer write to 0xffff8881321e5d90 of 8 bytes by interrupt on cpu 1: __mod_timer+0x720/0xc30 kernel/time/timer.c:1052 mod_timer+0x1b/0x20 kernel/time/timer.c:1108 mod_peer_timer drivers/net/wireguard/timers.c:37 [inline] wg_timers_any_authenticated_packet_traversal+0xc4/0xf0 drivers/net/wireguard/timers.c:215 wg_packet_consume_data_done drivers/net/wireguard/receive.c:361 [inline] wg_packet_rx_poll+0x865/0x11f0 drivers/net/wireguard/receive.c:481 __napi_poll+0x65/0x3f0 net/core/dev.c:6365 napi_poll net/core/dev.c:6432 [inline] net_rx_action+0x29e/0x650 net/core/dev.c:6519 __do_softirq+0x158/0x2de kernel/softirq.c:558 do_softirq+0xb1/0xf0 kernel/softirq.c:459 __local_bh_enable_ip+0x68/0x70 kernel/softirq.c:383 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x33/0x40 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:394 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline] wg_packet_decrypt_worker+0x73c/0x780 drivers/net/wireguard/receive.c:506 process_one_work+0x3f6/0x960 kernel/workqueue.c:2307 worker_thread+0x616/0xa70 kernel/workqueue.c:2454 kthread+0x2c7/0x2e0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 read to 0xffff8881321e5d90 of 8 bytes by task 1909 on cpu 0: __mod_timer+0x7c/0xc30 kernel/time/timer.c:980 mod_timer+0x1b/0x20 kernel/time/timer.c:1108 mod_peer_timer drivers/net/wireguard/timers.c:37 [inline] wg_timers_any_authenticated_packet_traversal+0xc4/0xf0 drivers/net/wireguard/timers.c:215 wg_packet_create_data_done drivers/net/wireguard/send.c:247 [inline] wg_packet_tx_worker+0xf7/0x360 drivers/net/wireguard/send.c:276 process_one_work+0x3f6/0x960 kernel/workqueue.c:2307 worker_thread+0x616/0xa70 kernel/workqueue.c:2454 kthread+0x2c7/0x2e0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 value changed: 0x00000000ffffabf4 -> 0x00000000ffffaeec Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 1909 Comm: kworker/0:5 Not tainted 5.16.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: wg-crypt-wg2 wg_packet_tx_worker ==================================================================